An insect growth regulator (IGR) is a substance (chemical) that inhibits the life cycle of an insect. IGRs are typically used to control populations of harmful pests, such as cockroaches or fleas.n insect growth regulator (IGR) is a substance (chemical) that inhibits the life cycle of an insect. IGRs are typically used to control populations of harmful pests, such as cockroaches or fleas.
Diet and supplementation are essential to the bone growing process. Including real, whole foods in your diet such as plentiful vegetables, fruits, nuts, cold-water fatty fish like salmon, and legumes. Plus, cutting out highly processed and sugary foods will provide your bones with what they need.
When it comes to vitamins, each one has a special role to play. 1  Vitamin D in milk helps your bones. 2  Vitamin A in carrots helps you see at night. 3  Vitamin C in oranges helps your body heal if you get a cut.  B vitamins in whole grains help your body make energy from food.